What Size MRCOOL Mini Split Do I Need?
MRCOOL DIY 5th Gen Multi-Zone Mini Split System | 2 Rooms up to 750 Sq. Ft.
Heat and cool two rooms independently with this all-in-one DIY system—includes two air handlers, one condenser, and pre-charged linesets for easy installation.
Product Description
Take control of your home comfort with the MRCOOL DIY 5th Gen Multi-Zone Mini Split System. This complete DIY kit allows you to heat and cool two rooms up to 375 sq. ft. each—all from one outdoor unit. Engineered for simple do-it-yourself installation, the system includes pre-charged QuickConnect® linesets, so you can skip the vacuum pump and refrigerant handling. No special tools or HVAC experience needed—just connect, mount, and enjoy professional-grade comfort in two zones.
Key Features & Benefits
✅ Dual Zone Independent Control – Heat or cool two rooms separately with individual temperature settings for each space.
✅ Truly DIY Installation – No HVAC license or special tools required. Everything you need is in the box, including pre-charged QuickConnect linesets.
✅ High-Efficiency Performance – 23.9 SEER2 cooling efficiency and 10.8 HSPF2 heating performance help lower your energy bills year-round.
✅ All-Weather Heating – Reliable heating works down to -13°F, keeping you warm even in harsh winter conditions.
✅ Complete System in One Box – Includes:
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1 Multi-Zone Outdoor Condenser
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2 Wall-Mounted Indoor Air Handlers
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Pre-charged QuickConnect Linesets for both zones
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DIYPRO® Cables
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Wireless Remotes
✅ Strong Warranty Protection – Backed by a 7-year compressor warranty and 5-year parts warranty for long-term peace of mind.
✅ Smart Control Ready – Compatible with the MRCOOL SmartHVAC app for remote temperature control.
Technical Specifications
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System Type: Multi-Zone Ductless Heat Pump (2 Zones)
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Total Capacity: 18,000 BTU (9K + 9K configuration)
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Room Coverage: Up to 375 sq. ft. per zone (750 sq. ft. total)
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Cooling Efficiency: 23.9 SEER2
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Heating Efficiency: 10.8 HSPF2
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Heating Performance: Works down to -13°F
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Refrigerant: R-454B (pre-charged in linesets)
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Installation: QuickConnect® system – no vacuum pump needed
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Warranty: 7-year compressor, 5-year parts
What’s Included
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1 Multi-Zone Outdoor Condenser Unit
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2 Wall-Mounted Indoor Air Handlers (9K BTU each)
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2 Pre-Charged QuickConnect® Linesets
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2 DIYPRO® Electrical Cables
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2 Wireless Remote Controls
Why Choose This MRCOOL Multi-Zone System?
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Cost-Effective: One outdoor unit serves two rooms, saving on equipment and installation costs.
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Energy Efficient: High SEER2 and HSPF2 ratings reduce monthly utility bills.
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Flexible Installation: Place indoor units in different rooms for zoned comfort.
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Pro Performance, DIY Simplicity: Get the benefits of a professionally installed multi-zone system without the high cost.
Perfect For
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Two-bedroom homes or apartments
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Home office + bedroom combinations
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Living room + master bedroom setups
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Garage workshop + adjacent room
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Anyone wanting zoned comfort without complicated installation
Installation Made Simple
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Mount the indoor air handlers on interior walls
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Install the outdoor condenser on a pad or bracket
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Connect the pre-charged linesets (no vacuum pump needed)
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Run the DIYPRO cables (no electrical conduit required)
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Power up and enjoy dual-zone comfort
Ready to heat and cool two rooms with one DIY system?
This MRCOOL DIY 5th Gen Multi-Zone Mini Split delivers professional performance with true DIY installation.
Order today and transform your home comfort this weekend!
Need a different configuration? Explore our full range of MRCOOL DIY Single Zone and Multi-Zone systems.


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